Combining Philosophers
Ideas for B Hale / C Wright, John Locke and Harry G. Frankfurt
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5 ideas
18. Thought / E. Abstraction / 1. Abstract Thought
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A species of thing is an abstract idea, and a word is a sign that refers to the idea [Locke]
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18. Thought / E. Abstraction / 7. Abstracta by Equivalence
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Abstracted objects are not mental creations, but depend on equivalence between given entities [Hale/Wright]
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One first-order abstraction principle is Frege's definition of 'direction' in terms of parallel lines [Hale/Wright]
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Abstractionism needs existential commitment and uniform truth-conditions [Hale/Wright]
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Equivalence abstraction refers to objects otherwise beyond our grasp [Hale/Wright]
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